19684640

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7237}}^1$

素因数の和:7269

約数の個数: 48

約数和(自身を含む): 49247352

約数和(自身を除く): 29562712

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7237, 14474, 28948, 36185, 57896, 72370, 115792, 123029, 144740, 231584, 246058, 289480, 492116, 578960, 615145, 984232, 1157920, 1230290, 1968464, 2460580, 3936928, 4921160, 9842320, 19684640]

約数ペア:

[(1, 19684640), (2, 9842320), (4, 4921160), (5, 3936928), (8, 2460580), (10, 1968464), (16, 1230290), (17, 1157920), (20, 984232), (32, 615145), (34, 578960), (40, 492116), (68, 289480), (80, 246058), (85, 231584), (136, 144740), (160, 123029), (170, 115792), (272, 72370), (340, 57896), (544, 36185), (680, 28948), (1360, 14474), (2720, 7237)]